OK, I'm just going to say, this idea bothers me a little, in that it seems to be missing the point.

"Within You Without You" is not a "one chord" song. Indian music is not "one chord music". This is music that doesn't use chords, at least not in the sense of chord-change-based progressions (to be fair, the video guy does say something like this.)

Really, imagine someone looking to play "Within You Without You" and buying a chart that told them to just strum an E major. That would make for a very disappointing performance, if they didn't know better.

I guess what bothers me is that "non-chord-change-based music" is SO broad a category, it sounds, I don't know, kind of reductive to me to describe it all as "one chord music".